Effect of strain rate on the fracture process in interlaminar shear specimens of carbon fibre-reinforced laminates

Crack detection gauges have been used to determine the start of catastrophic shear failure and to follow its propagation on the interlaminar plane in single-lap shear specimens of unidirectional carbon/epoxy and carbon/PEEK laminates loaded at both quasi-static and impact rates. The interlaminar fai...

Full description

Saved in:
Bibliographic Details
Published in:Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 1997, Vol.28 (2), p.171-180
Main Authors: Hiley, M.J., Dong, L., Harding, J.
Format: Article
Language:English
Subjects:
Applied sciences
CFRP and carbon/PEEK laminates
crack propagation
Exact sciences and technology
Forms of application and semi-finished materials
impact testing
interlaminar shear
Laminates
Polymer industry, paints, wood
Technology of polymers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Crack detection gauges have been used to determine the start of catastrophic shear failure and to follow its propagation on the interlaminar plane in single-lap shear specimens of unidirectional carbon/epoxy and carbon/PEEK laminates loaded at both quasi-static and impact rates. The interlaminar failure surfaces have been examined using optical and scanning electron microscopy. For carbon/epoxy specimens shear cusps characteristic of mode II shear failure were observed, while for carbon/PEEK specimens a small degree of plastic matrix deformation, typical of fast fracture, was obtained. These results are used to interpret those obtained from the single-lap shear specimen and to discuss the significance of previously published results on the rate dependence of the interlaminar shear strength for carbon/epoxy and carbon/PEEK laminates.
ISSN:1359-835X
1878-5840
DOI:10.1016/S1359-835X(96)00112-1